{"id":1143,"date":"2015-08-21T21:22:52","date_gmt":"2015-08-21T20:22:52","guid":{"rendered":"http:\/\/stg-blogs.bmj.com\/adc\/?p=1143"},"modified":"2015-07-23T23:44:30","modified_gmt":"2015-07-23T22:44:30","slug":"basics-avid","status":"publish","type":"post","link":"https:\/\/stg-blogs.bmj.com\/adc\/2015\/08\/21\/basics-avid\/","title":{"rendered":"Basics: AVID"},"content":{"rendered":"

\"060314_1404_Whenatestis1.jpg\"<\/a> The shortcut world of acronyms for critical appraisal was lacking one for diagnostic test accuracy – we have RAMbo for RCTs<\/a>, FAST for systematic reviews<\/a>, but what of the poor reader of studies evaluating a new test?<\/p>\n

We know the basic idea – patients who are considered to potentially have the diagnosis in question<\/a> have both the test-under-evaluation and the as-good-as-we, these are assessed without looking \u00a0at the results from the other one, and that if there are cut-offs these are reproducible<\/a>.<\/p>\n

Wait! That’s it …<\/p>\n

We need an\u00a0A<\/strong>ppropriate population – not a mix of barn door and definitely not<\/p>\n

It needs to avoid\u00a0V<\/strong>erification biases – make sure that everyone got both tests, not just those in whom the ‘new’ test was positive, for example<\/p>\n

The tests need to be I<\/strong>ndependent of each other<\/p>\n

And don’t believe a single study – with diagnostics we need to see D<\/strong>uplication of results<\/p>\n

There we go … AVID<\/p>\n

– Archi<\/p>\n","protected":false},"excerpt":{"rendered":"

The shortcut world of acronyms for critical appraisal was lacking one for diagnostic test accuracy – we have RAMbo for RCTs, FAST for systematic reviews, but what of the poor reader of studies evaluating a new test? We know the basic idea – patients who are considered to potentially have the diagnosis in question have […]<\/p>\n

Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79,81],"tags":[],"class_list":["post-1143","post","type-post","status-publish","format-standard","hentry","category-archimedes","category-diagnostics"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/posts\/1143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/comments?post=1143"}],"version-history":[{"count":0,"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/posts\/1143\/revisions"}],"wp:attachment":[{"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/media?parent=1143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/categories?post=1143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stg-blogs.bmj.com\/adc\/wp-json\/wp\/v2\/tags?post=1143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}